Question

If i had a solution of hcl and water.,... then it is acidic solution.....

so in the solution it will be like "H3o+ + cl-"
when i distilled it the distilled pure water is also acidic...... which means some of H+ ions are coming with the water as H3O+.........

here my question is then what happens to the lone cl_ ions in the concentrated solution....

any body can throw an idea.....

Answer 1

usually there is a solubility constant
Ks = [H+][Cl-]
determining the concentrations of the ionic species.
You also have the equilibrium constant for water dissociation
Ke = [H+][OH-]

Answer 2

Water all by itself has equal amounts of H+ ions and OH- ions, but are linked by hydrogen bonding between those two ions.
.
HCl is a gas and strongly dissociates in water forming H+ ions and Cl- ions

The acid is a strong protonator and attaches it's charge to the water molecule forming the ion H3O, which has the extra H+ as an proton to be donated to any thing an acid will react with

The cl- ion is very negative ion and will move around between being a Cl- ion and covalently bonding with another Cl- ion to form Cl2 gas. You can usually smell strong chlorine gas smell when you mix water and HCl, just to show you that those Cl- ions don't stay in solution very long especially in an open container

overall reaction:
HCl(g) + H2O(l) --> H3O+Cl-(aq)